Cable lock for collapsible revolving doors



Nov. 7, 1933. H. MUNSON CABLE LOOK FOR COLLAPSIBLE REVOLVING DOORS Filed Feb. 11. 1931 2 Sheets-Sheet l INVENTOR 2 6077 M40250 B7. a

WITNESSES ATTORNEYS 2 Sheets-Sheet 2 Nov. 7, 1933. H. MUNSON CABLE LOCK FOR COLLAPSIBLE REVOLVING DOORS Filed Feb. 11, 1951 INVENTOR iZr/y MMIZJO/L v ATTORNEY Patented Nov. 7, 1933 UNlTED STATES CABLE LOCK on COLLAPSIBLE REVOLVING nooas Harry Munson, Wantagh, N. Y., assignor to Van Kannel Revolving Door Company, New. York, N. Y., a corporation of New Jersey 7 Application February 11, 1931. Serial No. 515,096

6 Claims. (01. 20-18) This invention relates generally to revolving doors of either the collapsible or panic proof types, in which suitable ties or cables are employed for holding the wings of the door in radial relation.

The invention has more particular reference to a tie or cable locking device of the type such as disclosed in United States Letters Patent No. 1,185,313, and the outstanding object is to generally improve and simplify the structure of these types of locks in order toreduce the expense of production and installation without detracting from but rather increasing the efficiency thereof, due to a reduction in the number of parts employed and the corresponding minimizing of the likelihood of failure or breakage thereof.

With the above recited and other objects in ing devices constructed in accordance with the invention.

Figure 2 is a face view of the escutcheon plate to which the cable is'detachably locked.

Figure 3 is a face view of the other escutcheon plate to which the cable is anchored. V

Figure 4 is an inner face view of the escutcheon plate shown in Figure 2, illustrating the same as applied to the door, with the other plate removed and the cable in locked relation thereto.

Figure 5 is a horizontal sectional view taken approximately on the line 5-5 of Figure 4 and looking upwardly as indicated by the arrows.

Figure 6 is a similar fragmentary sectional View taken on the line 6-6 of Figure 4 and illustrating the manner in which the cable terminal is introduced or manually removed from the locking de-' vice.

Figure 7 is a transverse sectional view taken approximately on the line 7-7 of Figure 4.

Referring to the drawings by characters of reference, A designates the foldably mounted.

wings or leaves of a revolving door structure, and

B the ties, cables or equivalent elements which are secured at the opposite ends to adjacent door wings or leaves A and which function to tie, or hold said door wingsor leaves in a predetermined radial relation. In revolving doors of either the ordinary folding types or the collapsible panic proof types, some form of manually or automatically releasable means is provided to'receive and lock the unanchored terminal C of each tie or cable. 1 t

The locking device which constitutes the sub ject matter of the present invention includes a pair "of escutcheon plates for leach Wing or leaf of a revolving doorand which plates for the sake, of clearness will hereinafter be termed the body plate 10-and cover plate 11, said plates being of an appropriate size and applied in fiat contact to the opposite surfaces of the wing or leaf offlthe door atthe'proper point to cover and conceal an opening or cut-out portion 12 which extends completeiy through the thickness thereof. The body plate 10 is formed with a pair of vertically spaced, parallehinwardly directed flanges 13 'and- 14 of a depth slightly less than the Width of the door wing and of a lesser length than the opening or cut-out portion 12. The'flanges 13 and 14; are preferably cast or otherwise formed integral with the plate 10 and said flanges adjacent their juncture with the plate are thickened or provided with stepped portions 15 ontheir inner confronting faces, to provide together with the flanges 13 and Ida guideway for a longitudinally slidable gripper element 16. transversely medial forwardly projecting portion 17 having aconveX or camsurface 18. Limiting means, such as the stop lugs 19, are adapted to engage with an abutment element or rod 20 which extends across the flanges l3 and 14. Suitable meanssuch as th coiled expansion spring 21, normally urges the gripper element 16 to the limit of its movement where lugs 19 engage the abutment rod 20, and said means or spring tensions the gripper element 16 against opposite movement. As illustrated, the spring is interposed between the gripper element 16 and a tension regulator 22 which is disclosed as a nut longitudinally adjustable on a threaded stem 23, to vary the tension of the spring. The stem 23 extends through and is carried by an inwardly projecting lug, 24 cast or otherwise carried by the inner sur-. face .of the body plate 10. The oppositely projecting end of the stem 23 has threaded thereon a terminal piece 25 which is designed to be adjusted longitudinally to contact frictionally with the end wall of the door wing openingilZ, while a binding nut 26 may serve to lock said terminal piece against. accidental movement. v

The body plate 10 is formed with an opening through its thicknes'a'which opening theoretically consists of an upper longitudinally slotted portion 30 and a lower longitudinally slotted portion 31] which communicate with each other adjacent The element 16 is provided with a detent element which is designated generally by the inner ends thereof and which extend longitudinally away from each other. The inner end 32 of the lower slotted portion 31 merges into and forms a part of a transverse rib 33 which projects inwardly from the inner surface of the body plate 10. The rib is formed with a rounded edge 34 which constitutes a stationary gripping element disposed in relative position to and adapted to.

cooperate with the movable gripper element 16, to accommodate therebetween the cable terminal or tip C, which may be introduced between the rounded edge or stationary gripping element 34 and the convex or cam surface 18 of the medial extension 17 by vertical movement. It is, of course, apparent that the cable tip or terminal C is flared outwardly in the usual manner so that it cannot be withdrawn by a direct axial pull on the cable B unless sufiicient force is exerted against the tension of spring 21 to effect relative separation of the movable gripper element 16 with respect to the stationary gripping element 34. Optional release of the cable tip C may be accomplished either by exerting a force, exceeding thespring tension, against adjacent door wings or bylifting the cable terminal or tip C from between the stationary and movable grippers and removing the same through the upper slotted portion where the tip C is in a plane above and free from the gripping elements. It is, of course, obvious that the locking engagment of the cable terminal or tip C with the gripping elements 34 and 16 is accomplished by initially introducing the tip through the upper slotted portion 30 and A then moving said tip vertically down to its locked portion shown in Figures 4 and 5.

In order to prevent accidental or unintentional upward movement and possible release of the locked cable terminal or tip C, use is made of a the reference character 40. The detent element is fashioned to provide a bifurcated portion 41 which receives through the furcations thereof a fulcrum 42, such as a machine screw, which passes through the flange 13 and is threadedly anchored in apart of the casting which forms the rib 33. The detent element has a tail piece or terminal 43 which by virtue of a spring 44 is normally disposed over the locked cable tip C, as clearly disclosed in Figures 2, 4 and 5. When introducing thetip C through theupper slotted portion 30, the tip C is merely pressed against the tailpiece 43 of the detent to deflect the same in the manner illustrated in Figure 6. Obviously, the removal of thetip by lifting upwardly'is accomplished by initially swinging the detent 40 substantially to the position illustrated in Figure 6, it being apparent that the manipulating end 46 protrudes from the escutcheon body plate 10 for this very purpose.

In order to provide means to cooperate with the terminal piece 25 by frictionally engaging within the opposite end wall of the door wing openmg, a second terminal piece 50 is threadedly engaged on a threaded stem 51 disposed in axial alignment with the threaded stem 23 and carried by a lug 52 which projects inwardly from the inner surface ofthe body plate 10, a binding nut 53 being employed to' lock the terminal piece in its adjusted position.

The cover plate 11 may be secured in place in any desired manner, but, as illustrated, it is directly attached to the body plate 10 by means of screws 55 which extend through tubular inwardly projecting bosses 56 cast on the plate 11, and which screws are threadedly anchored within the threaded bores 57 of mating bosses 58 projecting inwardly from the body plate 10. As in the prior art, the cover plate is formed with the usual boss 59 having the keyhole slot 60 and retaining screw or pin 61 which anchors the other tip D of the cable B.

From the foregoing, it will be seen that an improved cable lock for revolving door wings has been devised which employs but few and simple parts cable of being economically produced and assembled and which look efficiently performs its function. I

What is claimed is:

1. A look mechanism of the indicated character including an escutcheon plate having upper and lower oppositely directed slotted portions communicating with each other adjacent their inner ends to define a step-shaped opening through the thickness of said plate; means defining together with the inner end of the lower opening, a fixed tie end engaging element; a cooperative movable tie end engaging element mounted for guided movement in the inner side of the plate; means for urging the movable element toward the fixed element and for tensioning the former against movement away from the latter; means for limiting the movable element to such a limited spaced relation as to receive and holdthe tie end against withdrawal by direct axial pull without moving the movable element away from the fixed element and detent means located within the upper slotted portion normally urged to a position overlying the locked tie end for preventing accidental or unintentional upward displacement thereof.

2. A lock mechanism of the indicated character including an escutcheon plate having upper and lower oppositely directed slotted portions communicating with each other adjacent their inner ends to define a step-shaped opening through the thickness of said plate; means defining together with the inner'end'of the lower opening, a fixed tie end engaging element; a cooperative movable tie end engaging element mounted'for guided movement in the inner side of the plate; means for urging the movable element toward the fixed element and for tensioning the former against movement away from the latter; means for limiting the movable element to such a limited spaced relation as to receive and hold theti e end against withdrawal by direct axial pull without moving the movable element away from the, fixed element and detent means located within the upper slotted portion normally urged to a position overlying the locked tie end for preventing accidental or unintentional upward displacement thereof, f

said detent means being capable of manual movement to a non-detaining position. j

3. A look mechanism of the indicatedcharacter includingan escutcheon plate having upper and lower oppositely directed slotted portions communicating with each other adjacent their inner ends to define a step-shaped opening through the thickness of said plate; means defining together with the inner end of the lower opening, a fixed tie end engaging element; a cooperative movable tie end engaging element mounted for guided movement in the inner sideof the plate; means for urging the movable element toward the fixed element and for tensioning'the former against movement away from the latter; means for 'limt iting the movable element to such a limited spaced relation as to'receive and hold the tie end against withdrawal by direct axial pull without moving the movable element away from the fixed element; detent means located within the upper slotted portion normally urged to a position overlying the locked tie end for preventing accidental or unintentional upward displacement thereof, said detent means being capable of manual movement to a non-detaining position and a tail piece on said detent adapted to be engaged by the tie end for deflecting the detent when initially introducing the tie end through the upper slotted portion.

4. In a lock for the ends of wing spacingvcables for a revolving door, means, releasable under a predetermined endwise pull exerted on the cable, for holding one end of said cable and with which means said end of the cable is engageable and disengageable by sidewise movement of the cable and a detent for preventing said sidewise movement of the cable.

5. In a lock for the ends of wing spacing cables for a revolving door, means, releasable under a predetermined endwise pull exerted on the cable, for holding one end of said cable and with which means said end of the cable is engageable and disengageable by sidewise movement of the cable and a detent for preventing said sidewise movement of the cable, said detent being shiftable to admit of sidewise movement of said cable to effect engagement of the end with said holding means and disengagement of the same therefrom.

6. In a cable lock for revolving doors, a cable terminal piece having a reduced body with an enlarged extremity, a lock casing having a slot for receiving said terminal piece therethrough, a spring pressed element normally urged to spaced relation with reference to a portion of one end of the slot equal to the width of the reduced body of the terminal piece whereby said terminal piece may be engaged between said end of the slot and gripper or disengaged therefrom by sidewise 

